<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>


</head>


<input>
<div id="test"> 
    南昌大学
</div>
<div id="oninput">
    输入的信息是：<span id="nowInput"></span>
</div>

<input type="inputText"type="text">
<button id="getInput">
    点击消失
</button>
</input>
<body>
    <script>
        var testDom=document.getElementById("test");
        testDom.innerText="NCU";
        console.log(testDom);

        var inputDom=document.getElementById("inputText");
        var buttonDom=document.getElementById("getInput");
        buttonDom.onclick=function(){
            alert(inputDom.value);
        }
var spanDom=document.querySelector("span");

buttonDom.onclick=function(){
    inputDom.style.display="none";
}
querySelector("table nth-child(2)");

    </script>
    
</body>
</html>